2025-08-29 11:59.48: New job: Build using linux-x86_64 in
                                [https://github.com/mirage/mirage-skeleton.git#refs/pull/409/head (3b9efcbfa6d687b777e70e2b35ff384598ed414a)]

OBuilder spec:

((from ocaml/opam:debian-10-ocaml-4.14)
 (user (uid 1000) (gid 1000))
 (workdir /home/opam)
 (run (shell "sudo chown opam:opam /home/opam"))
 (run (shell "sudo ln -f /usr/bin/opam-2.1 /usr/bin/opam && opam update"))
 (run (network host)
      (shell "opam repo add opam https://github.com/ocaml/opam-repository.git#f2cd184cfc6f3b25d3bda0873beb3e8b254806ec"))
 (run (cache (download-cache (target /home/opam/.opam/download-cache)))
      (network host)
      (shell "sudo apt-get update && opam install -y \"mirage>=4\""))
 (copy (src .) (dst /src/))
 (env MODE xen)
 (workdir /src/)
 (run (shell "opam exec -- make configure"))
 (env MIRAGE_EXTRA_REPOS opam-overlays:https://github.com/dune-universe/opam-overlays.git#e031bb64e33bf93be963e9a38b28962e6e14381f,mirage-opam-overlays:https://github.com/dune-universe/mirage-opam-overlays.git#797cb363df3ff763c43c8fbec5cd44de2878757e)
 (run (network host)
      (shell "opam exec -- make lock"))
 (run (cache (download-cache (target /home/opam/.opam/download-cache)))
      (network host)
      (shell "sudo apt-get update && opam exec -- make depends"))
 (run (shell "opam monorepo list -l mirage.opam.locked"))
 (run (cache (download-cache (target /home/opam/.opam/download-cache)))
      (network host)
      (shell "opam exec -- make pull"))
 (env DUNE_CACHE enabled)
 (env DUNE_CACHE_TRANSPORT direct)
 (run (cache (dune-build-cache (target /home/opam/.cache/dune)))
      (network host)
      (shell "opam exec -- make build"))
)

2025-08-29 11:59.48: Using cache hint "mirage-ci-skeleton-debian-10-ocaml-4.14"
2025-08-29 11:59.48: Waiting for resource in pool OCluster
2025-08-29 11:59.48: Waiting for worker…
2025-08-29 11:59.48: Got resource from pool OCluster
Building on asteria.caelum.ci.dev
All commits already cached
HEAD is now at 3b9efcb Add an example that uses ~local_libs

(from ocaml/opam:debian-10-ocaml-4.14)
2025-08-29 12:00.14 ---> saved as "feee4396c1d94d93bd2f0711740834a80d493221dd8765a3fda3bfa3da34a3f1"

/: (user (uid 1000) (gid 1000))

/: (workdir /home/opam)

/home/opam: (run (shell "sudo chown opam:opam /home/opam"))
2025-08-29 12:00.15 ---> saved as "b4aec13d2c0c8862a0b012b7bf45b6c4d9baafb01deec22932d9281a2a3993ed"

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-2.1 /usr/bin/opam && opam update"))
This version of opam requires an update to the layout of /home/opam/.opam from version 2.0 to version 2.1, which can't be reverted.
You may want to back it up before going further.

Continue? [Y/n] y
Format upgrade done.

<><> Updating package repositories ><><><><><><><><><><><><><><><><><><><><><><>
[default] synchronised from file:///home/opam/opam-repository
2025-08-29 12:01.19 ---> saved as "4b65e2cdab0e73f000c7fd1c66f5d777aef7f109b0fc71798f2edf63b3d5e373"

/home/opam: (run (network host)
                 (shell "opam repo add opam https://github.com/ocaml/opam-repository.git#f2cd184cfc6f3b25d3bda0873beb3e8b254806ec"))
[opam] Initialised
[NOTE] Repository opam has been added to the selections of switch 4.14 only.
       Run `opam repository add opam --all-switches|--set-default' to use it in all existing switches, or in newly created switches, respectively.

2025-08-29 12:02.01 ---> saved as "b3e538dd517986d414032491cd20b8ef17564462f51199f01f67e30d9c1218b2"

/home/opam: (run (cache (download-cache (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell "sudo apt-get update && opam install -y \"mirage>=4\""))
Ign:1 http://deb.debian.org/debian buster InRelease
Ign:2 http://deb.debian.org/debian-security buster/updates InRelease
Ign:3 http://deb.debian.org/debian buster-updates InRelease
Err:4 http://deb.debian.org/debian buster Release
  404  Not Found [IP: 2a04:4e42:82::644 80]
Err:5 http://deb.debian.org/debian-security buster/updates Release
  404  Not Found [IP: 2a04:4e42:82::644 80]
Err:6 http://deb.debian.org/debian buster-updates Release
  404  Not Found [IP: 2a04:4e42:82::644 80]
Reading package lists...
E: The repository 'http://deb.debian.org/debian buster Release' no longer has a Release file.
E: The repository 'http://deb.debian.org/debian-security buster/updates Release' no longer has a Release file.
E: The repository 'http://deb.debian.org/debian buster-updates Release' no longer has a Release file.
"/usr/bin/env" "bash" "-c" "sudo apt-get update && opam install -y "mirage>=4"" failed with exit status 100
2025-08-29 12:02.02: Job failed: Failed: Build failed